255239377699 has 2 divisors, whose sum is σ = 255239377700. Its totient is φ = 255239377698.

The previous prime is 255239377691. The next prime is 255239377751. The reversal of 255239377699 is 996773932552.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 255239377699 - 2³ = 255239377691 is a prime.

It is not a weakly prime, because it can be changed into another prime (255239377691) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 127619688849 + 127619688850.

It is an arithmetic number, because the mean of its divisors is an integer number (127619688850).

Almost surely, 2^255239377699 is an apocalyptic number.

255239377699 is a deficient number, since it is larger than the sum of its proper divisors (1).

255239377699 is an equidigital number, since it uses as much as digits as its factorization.

255239377699 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 192893400, while the sum is 67.

The spelling of 255239377699 in words is "two hundred fifty-five billion, two hundred thirty-nine million, three hundred seventy-seven thousand, six hundred ninety-nine".